Steam-boiler



2 Sheets-Sheet 1.

(No Model.)

E. B. liuxDLAlvI.

STEAM BGILER.

PatentedJune 3,1884.

WITH-5555i INYENUa @6] (No Model.) 2 sheets--sneet 2.

. E. B. BADLAM.

I STEAM'BOILER.

Patented June 3 @fmm UNITED STATES PATENT OFFICE.

EDGAR B. BADLAM, OF SAN FRANCISCO, CALIFORNIA.

STEAM-BOILER.

SPECIFICATION forming part Of Letters Patent N0. 299,505, dated June 3, 1884'.

*Y Y Application filed December 19, 1883. (No model.)

To @ZZ whom it may concern:

Be it known that I, EDGAR B. BADLAM, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Steam-Boilers, of

. which the following is a specification.

My invention relates to'improvements in steam-boilers, the object being to provide a means whereby steam may be quickly generated and the draft of the furnace greatly increased. These objects I accomplish by means of the construction illustrated in the accompanying drawings, in which- Figure I is a central vertical sectional view of a steam-boiler and furnace embodying my invention. Fig. 2 is a sectional plan view of the same.

Similar letters of reference are used to indicate like parts throughout the several views.

A represents the furnace-walls, which should be built circular in plan and in the usual manller.

Bis the grate, C the fire-box or combustionchamber, and D the ash-pit.

y Within the combustion-chamber I place the boiler E, which extends for a short distance through the roof A ofthe combustion-chamber, as clearly shown in Fig. I. The bottom or lower end of this boiler is closed by a head, F, which is perforated to receive the interiorlyplaced cylinder G, which is open at its lower end but closed at the upper end by a head, H, which in turn is perforated to receive the end of the pipe or funnel I, the upper end of which, after passing through the head J of the outer shell of the boiler, enters the T-piece K, as shown, and thus a water-chamber, L L, is formed between the outer shell or casing of the boiler and the short cylinder G and tube I, while a chimney or flue, M, is formed in the center or upon the vertical axis of the boiler. An opening is made in the head of the T-piece or joint K, which receives the pipe N, leading from the exhaust ofthe engine, and being extended over and beyond the opening communicating with the pipe or funnel I. The opposite end of the T-joint is fitted with a pipe, O, which discharges into the main smoke-stack or chimney P, which is erected at any suitable part of the roof of the furnace. The outer shell of the boiler is tapped to receive a number of downwardly-inclined radial tubes or pipes, Q, closed at their lower ends but open at their inner or upper ends, and

communicating with the water-space. These tubes are arranged in horizontal and vertical rows, and the tubes of one horizontal row may be interspaced with those of the preceding row. in order to present a greater surface to the direct action of the flames. Suitable gages are attached to the boiler in the usual manner, as shown in Fig. I.

Awire-gauze diaphragm, R, is placed across the upper part of the water or steam-chamber I, for the purpose of drying the steam so that the water will not escape into the steam-outlet pipe S, which enters the head .I of the boiler. One ofthe lower radial tubes is carried through the wall of the furnace and forms the feed-water pipe T.

The operation of my improved steam-generator will be as follows, to wit: As the water is received through the feed-pipe into the water-chamber L L', a great portion of the supply will pass into and be distributed through the radial pipes Q Q, and by thus bringing a great quantity of water into contact with the metal surfaces exposed to the direct action of the iiames arising from the grate or fire-box steam will be quickly formed. The steam from the exhaust is now admitted through the pipe N and blown through the T-joint K and pipe O, which will produce a vacuum over the top end of the smoke-due I, and thereby suck' or draw a great body of iiame and heat up through the centrally-located flue or chimney M, and is then carried by the current of steam up into the discharge-flue or chimney P, and out into the open air.

From the foregoing it will be seen that the radiation of heat from the central or interior flue will greatly assist in raising the temperature of the water and quickly produce the desired pressure of steam.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is A The combination and arrangement of the central water-chamber, E, pipes G I, T piece or joint K, and the pipes N and O, the former leading into the furnace and the latter leading into the funnel, substantially in the manner and for the purpose as set forth and described.

In testimony that I'claim the foregoing I have hereunto set my hand and seal.

Witnesses: EDGAR B. BADLAM. [1.. s]

WILMER BRADFORD, C. W. M. SMITH.

I OO 

